/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 26727
 * Date: 2024-05-28
 * Time: 22:32
 */
public class Test15 {
    public static void main(String[] args) {
        String s = "hello ";
        s += "world!";
        System.out.println(s);
        StringBuilder stringBuilder = new StringBuilder("d");
    }
}
